<html>

<head>
  <title>Testing HTML scrollable frames (css overflow style)</title>

  <link rel="stylesheet" type="text/css"
        href="chrome://mochikit/content/tests/SimpleTest/test.css" />

  <script type="application/javascript"
          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

  <script type="application/javascript"
          src="../common.js"></script>
  <script type="application/javascript"
          src="../role.js"></script>
  <script type="application/javascript"
          src="../events.js"></script>

  <script type="application/javascript">

    ////////////////////////////////////////////////////////////////////////////
    // Invokers
    ////////////////////////////////////////////////////////////////////////////

    /**
     * Change scroll range to not empty size and inserts a child into container
     * to trigger tree update of the container. Prior to bug 677154 not empty
     * size resulted to accessible creation for scroll area, container tree
     * update picked up that accessible unattaching scroll area accessible
     * subtree.
     */
    function changeScrollRange(aContainerID, aScrollAreaID)
    {
      this.containerNode = getNode(aContainerID);
      this.container = getAccessible(this.containerNode);
      this.scrollAreaNode = getNode(aScrollAreaID);

      this.eventSeq = [
        new invokerChecker(EVENT_REORDER, this.container)
      ];

      this.invoke = function changeScrollRange_invoke()
      {
        this.scrollAreaNode.style.width = "20px";
        this.containerNode.appendChild(document.createElement("input"));
      }

      this.finalCheck = function changeScrollRange_finalCheck()
      {
        var accTree =
          { SECTION: [ // container
            { SECTION: [ // scroll area
              { ENTRY: [] } // child content
            ] },
            { ENTRY: [] } // inserted input
          ] };
        testAccessibleTree(this.container, accTree);
      }

      this.getID = function changeScrollRange_getID()
      {
        return "change scroll range for " + prettyName(aScrollAreaID);
      }
    }

    /**
     * Change scrollbar styles from hidden to auto. That makes us to create an
     * accessible for scroll area.
     */
    function changeScrollStyles(aContainerID, aScrollAreaID)
    {
      this.container = getAccessible(aContainerID);
      this.scrollAreaNode = getNode(aScrollAreaID);

      this.eventSeq = [
        new invokerChecker(EVENT_SHOW, getAccessible, this.scrollAreaNode),
        new invokerChecker(EVENT_REORDER, this.container)
      ];

      this.invoke = function changeScrollStyles_invoke()
      {
        var accTree =
          { SECTION: [] };
        testAccessibleTree(this.container, accTree);

        this.scrollAreaNode.style.overflow = "auto";
      }

      this.finalCheck = function changeScrollStyles_finalCheck()
      {
        var accTree =
          { SECTION: [ // container
            { SECTION: [] } // scroll area
          ] };
        testAccessibleTree(this.container, accTree);
      }

      this.getID = function changeScrollStyles_getID()
      {
        return "change scrollbar styles " + prettyName(aScrollAreaID);
      }
    }

    ////////////////////////////////////////////////////////////////////////////
    // Do tests
    ////////////////////////////////////////////////////////////////////////////

    var gQueue = null;
    //gA11yEventDumpID = "eventdump"; // debug stuff
    //gA11yEventDumpToConsole = true;

    function doTests()
    {
      gQueue = new eventQueue();

      gQueue.push(new changeScrollRange("container", "scrollarea"));
      gQueue.push(new changeScrollStyles("container2", "scrollarea2"));

      gQueue.invoke(); // Will call SimpleTest.finish();
    }

    SimpleTest.waitForExplicitFinish();
    addA11yLoadEvent(doTests);
  </script>
</head>

<body>

  <a target="_blank"
     href="https://bugzilla.mozilla.org/show_bug.cgi?id=677154"
     title="Detached document accessibility tree">
    Mozilla Bug 677154</a>

  <p id="display"></p>
  <div id="content" style="display: none"></div>
  <pre id="test">
  </pre>
  <div id="eventdump"></div>

  <div id="container"><div id="scrollarea" style="overflow:auto;"><input></div></div>
  <div id="container2"><div id="scrollarea2" style="overflow:hidden;"></div></div>
</body>
</html>
